Weft-detecting mechanism



Nov. 11 1924. 1,514,934 E. H. RYON WEFT DETECTING MECHANISM Filed Oct. 20. 1921 5 Sheets-Sheet 1 WEFT DETECTING MECHANISM Filed Oct. 20 1921 I5 Sheets-Sheet 2 Nov. 11 1924. 1514;934

E. H. RYON WEFT DETECTING MECHANI SM Filed Oct. 20. 1921 3 Sheets-Sheet 5 Patented Nov. 11, T1924.

EPPA H. RYON, OF WALTHAM, MASSACHUSETTS, ASSIGNOR TO CEOMPTON 8c KNOWLES LOOlVl VJORKS, OF WORCESTER, lvfASSACHUsETTS, A CORPORATION OF MAS SA- CHUSE'ITS.

wnrr-nnrnormc MECHANISM.

Application filed. October 20, 1921. serial No. 509,113.

T all whom it may concern:

Be it known that I, ErrA-H. RYoN, a citizen of the United States, residing at .Valtham, in the county of Middlesex and State of Massachusetts, have invented a new and useful Weft-Detecting Mechanism, of which the following is a specification.

This invention relates to weft detecting mechanism for an automatic weft replenishing loom.

It is the general object of my invention to improve and simplify the construction of weft detecting mechanism of the multiple plunger type such as is disclosed in my prior Patent No. 1,221,768, issued April 3, 1917. V

Vith this general object in view, important features of my invention relate to the provision of an improved type of detecting member or plunger; to novel devices for adjusting the detecting mechanism in different directions relative to the shuttle and weft carrier; to a new retaining device or cover for the plungers, operative also to withdraw the plungers upon indication of transfer; and to other arrangements and combinations of parts which will be hereinafter described and more particularly pointed out in the appended claims.

A preferred form of my invention is shown in the drawings, in which Fig.1 is a right hand sideelevation of my improved weft detecting mechanism;

Fig. 2 is a rear elevation thereof, looking in the direction of the arrow 2 in Fig. 1;

Fig. 3 is a left hand side elevation of parts of the detecting mechanism;

Fig. 4c is a partial front elevation, look" ing in the direction of the arrow A in Fig. 3;

Figs. 5 and 6 are end and side views of an eccentric stud for adjusting the mechanism;

Figs. 7 and 8 are side and end views of one of the detecting plungers; and

Fig. 9 is a perspective view of the plunger cap or cover.

Referring particularly to Figs. 1 and 2, I have shown a portion of a loom side 10 to which is bolted a bracket 11. A block 12 is secured to the bracket 11 by bolts 13 extending through a slot in the block and permitting forward and rearward adjustment thereof. The block 12 has a rearwardly inclined depending arm 14 having a bearing for the cylindrical portion 15 of an eccentric adjusting-stud 16. Thestud is held in adjusted angular position in its bearing by a binling nut 17 threaded to the end of the stu At its lower end the arm 14 is also provided with depending projections 19 and 20 (Fig. 3) in which adjusting screws 21 and 22 are threaded. A frame or support 23 is provided with a split bearing fitting the eccentric portion of the stud 16 and the support may be clamped thereon by a is periodically reciprocated by suitable connections to the loom cam shaft (not shown). A transferrer 29 is pivotally mounted above the weft detecting mechanism and is provided with a latchor book 30 movable into the path of the hooked end of the member 28 after indication of transfer.

.The transferrer and its actuating mechanism form no part of my present invention and for further details, reference is made to my prior application Serial No. 470,335, filed May 17, 1921.

A stand 31 is yieldingly secured to the upper end provid transversely extending rib or projection 32 on the front face of the support 23. The stand is'held in yielding engagement with the rib and thefront face of the support by a bolt 33 parts 23 and 31 and having a compression spring 34: inserted between its head and the rear face of the support.

The stand 31 has a rearwardly extending portion 35 which is grooved or slotted to receive a plurality of slid-able detecting plungers 36. A cover or cap 37 (Fig. 9) is The support 23 proof the support 23,the stand beingwith a groove adapted to receive a extending freely through the 4 slidably mounted on the stand 31 and is held in position thereon by depending inturned flanges 3 8 The plungers are of special construction, being preferably formed from flat sheet metal and having reduced detecting points 39 and rectangular relatively broad intermediate portions 40 and having also upwardly extending lugs or projections 41 at their front ends. 5

These projections 41 are yieldingly engaged by a tension plate 42 (Fig. 4) pivoted upon a stud 43 on the stand 31 and yieldingly pressed against the projections 41 of the plungers by a coil spring 44. A hook engaging member 45 is pivoted at 46 on an L-shaped rod 47, also slidably mounted in the guides 26 and 27 previously described, and yieldingly pressed downward by a coil spring 48.

The lower end of the rod 47 is positioned for engagement by a lift screw 49 adjustable in an arm 50 extending laterally from the transferrer actuating member 28. The rod 47 is thus engaged each time the mei'nber 28 approaches its upper limit of travel and is moved sulliciently to raise a ledge 51 on the member 45 (Fig. 1) above the upper ends of the plunger projections 41.

As the member 28 moves downward, the rod 47 moves yieldingly downward there with, and the member 4-5 also moves downward with the rod without changing its position relative thereto, provided the ledge 51 does not engage one of the projections 41. If, however, exhaustion of filling on the active weft carrier permits one of the phmgers to remain in rearward position, its pro jection 41 will be engaged by the ledge 51, swinging the member 45 about its pivot and causing an adjustable stop screw 52 to en gage and swing the latch or hook 30 into the path of the hook on the actuating member 28. v

Whenever a transfer is to occur, it is necessary to withdraw all the detecting points 39 from the path of the incoming weft carrier. For this purpose I provide a stud 53 Figs. 3 and 9) on one side of the cover 37, said stud extending through a slot 54 in a link 55 which is 'pivotally connected at 56 (Fig. 1) to a depending arm 57 forming part of the transferrer 29. henever the transferrer descends, the link will draw the cover or cap 37 forward, engaging the projections 41 of the detecting plungers and. removing all of the plungers from the path of the incoming weft carrier. The

head of the stud 53 is substantially rectangular, so that the slot in the link 55 may be slipped over the stud when the parts are at right angles to each other, thus affording a convenient means of attaching the link to the cover.

The cover 37 thus serves the double pur' pose of retaining the plungers in the stand 31 and also acting to withdraw the plungers during transfer. The covers are readily removable, so that the guideways for the plungers may be cleaned when necessary.

By a. combination of the several adjustments described, the weft detector may be securely held in any desired positionrelative to the shuttle and weft carrier, the parts being raised or lowered and being moved forward or back by adjusting the eccentric stud 16, being adjusted angularly by the screws 21 and 22, and being also adjustable longitudinally of the weft carrier along the eccentric stud 16.

The novel form of plunger or detecting member herein shown and described poss-esses much greater strength and rigidity than the plunger shown in my prior applications and may also be more easily and cheap ly manufactured.

Having thus described my invention, it will be evident that changes and i'nodiiications may be made therein by those skilled in the art within the spirit and scope of my invention as set forth. in the claims, and I do not wish to be otherwise limited to the details herein disclosed, but what I claim is:

1. In a weft replenishing loom having a transferrer, weft detecting mechanism comprising a stand, a plurality able in said stand, and a cover for said stand and plungers, said cover being slidable on said stand and being connected for moven'ient with said transferrer to withdraw said plungers from operativ position.

2. In a loom having a transferrer, weft detecting mechanism comprising a plurality of detecting plungers, a. stand for said plungers, and means to withdraw all of said plungers from operative position upon indicationof transfer, said plungers having upward projections engaged by said means, and said means being also effective to prevent displacement of said plunge-rs in said support.

In testimony whereof I have hereunto atlixed my signature EPPA H. RYON. I

of plungers slid-. 

